I can't get my head round huge numbers such as 2,200 years travelling
at 99% of the speed of light being equivalent to more than 15,000
years in the rest of the universe.
I can't get my head round huge numbers such as 2,200 years travelling
at 99% of the speed of light being equivalent to more than 15,000
years in the rest of the universe.
Reynolds is an astrophysist, so I'd hope he'd get that sort of thing
right.
15,000 years ... are they headed for the centre of the galaxy?
No. Away from the centre, far away.
On 24/06/2026 14:17, Lawrence D?Oliveiro wrote:
On Thu, 11 Jun 2026 16:20:47 +1200, Titus G wrote:
I can't get my head round huge numbers such as 2,200 years
travelling at 99% of the speed of light being equivalent to more
than 15,000 years in the rest of the universe.
The Lorentz factor sounds about right
<https://en.wikipedia.org/wiki/Length_contraction>:
import math
? = lambda v : 1 / math.sqrt(1 - v * v)
# Lorentz factor, v being speed as a fraction of c
?(.99)
? 7.088812050083354
15,000 years ... are they headed for the centre of the galaxy?
No. Away from the centre, far away.
On Wed, 24 Jun 2026 17:39:53 +1200, Titus G wrote:
15,000 years ... are they headed for the centre of the galaxy?
No. Away from the centre, far away.
What is there in that direction? One of the Magellanic Clouds,
perhaps?
On 6/24/2026 1:39 AM, Titus G wrote:
On 24/06/2026 14:17, Lawrence D?Oliveiro wrote:
On Thu, 11 Jun 2026 16:20:47 +1200, Titus G wrote:
I can't get my head round huge numbers such as 2,200 years
travelling at 99% of the speed of light being equivalent to more
than 15,000 years in the rest of the universe.
The Lorentz factor sounds about right
<https://en.wikipedia.org/wiki/Length_contraction>:
ÿÿÿÿ import math
ÿÿÿÿ ? = lambda v : 1 / math.sqrt(1 - v * v)
ÿÿÿÿÿÿ # Lorentz factor, v being speed as a fraction of c
ÿÿÿÿ ?(.99)
ÿÿÿÿ ? 7.088812050083354
15,000 years ... are they headed for the centre of the galaxy?
No. Away from the centre, far away.
Going 15 kly further out puts you pretty near the outer edge of
our galaxy.
pt
On 2026-07-09, Default User <defaultuserbr@yahoo.com> wrote:
I can't get my head round huge numbers such as 2,200 years travelling
at 99% of the speed of light being equivalent to more than 15,000
years in the rest of the universe.
Reynolds is an astrophysist, so I'd hope he'd get that sort of thing
right.
Plugging the numbers into the time dilation equation isn't exactly
rocket science.
https://en.wikipedia.org/wiki/Time_dilation
99% c gives a Lorentz factor of ... *types on HP-11C* ... 7.09.
Which would agree with the approximate figures above.
| Sysop: | Jacob Catayoc |
|---|---|
| Location: | Pasay City, Metro Manila, Philippines |
| Users: | 4 |
| Nodes: | 4 (0 / 4) |
| Uptime: | 495847:56:05 |
| Calls: | 178 |
| Files: | 587 |
| D/L today: |
3 files (3,318K bytes) |
| Messages: | 69,833 |